I don't do PC
My drivetrain was working flawlessly until a recent super mucky ride. I took the chain off to soak and clean it and when I put it back on it started dropping off the big and middle chainrings when I'm in the bigger cogs in the back. I don't think the chain or chainrings are in bad shape and usually a new chain will do this untill it stretches a bit. I did have to put a new link on at the end but I checked that also to make sure it wasn't kinked-I'm confused?? any ideas??